.Net Developer

Designed and scaled a cloud-native IoT ingestion platform handling millions of device messages daily for external ISVs and clients. Built new APIs from scratch using CQRS & ACL patterns. Performed the migration of huge amount of data (over 10M+) from old DB to a new one. Optimized system performance and reduced infrastructure costs (serverless on AWS).

Worked across two large-scale systems in aviation and enterprise ERP domains, delivering performance-focused backend and user-facing features. Enabled flexible voucher generation, reduced boarding pass generation time from 30s to 10s, allowed partial boarding passes for selected passengers, implemented role upgrade at payment step without resetting booking flow, integrated dynamic subscription pricing logic, implemented dynamic price calculation for Premium+ subscription depending on months left to Premium expiration date, enabling company to offer targeted price per each customer, implemented multi-tier access levels with SSO (Google, MS, OpenID).

Delivered desktop enhancements for an energy network design system using WPF and multithreading. Fixed drawing mechanism of a Bezier curve, integrated ESRI health checks and polygon metadata on Bing Maps, developed data validation engine for power plant inputs.

Contributed to the What-If risk assessment tool used by financial regulators to assess exposure and compliance. Reduced UI latency from 5s to less than 1s in WPF, implemented role-based visibility for sensitive data, enabled support of large EXCEL files (more than 1 GB), added support for a CNMV regulator.

Worked at credit master solution, enabling credit consultants and credit officers to create and process a credit application for physical customers. Created a service which encrypts communication between client and service on the fly, added support of a spouse agreement requirement for a credit, implemented GDPR-compliant mechanism for a credit consultant and customer.

Worked on internal SPA and Web SSO platforms for a corporate intranet startup and identity management system. Increased the news section readability, added news topic customizations, reduced server CPU usage from 98% to 40% during peak load, added reporting for daily/monthly/yearly service usage.

Developed software for 'DeLaval' as a client, providing ability to manage the cow farm and its performance, such as milking, feeding, vet visiting, milk price calculation and so on. Added a new module for herd management, speeded up CSV generating from one minute to twenty seconds.

Developing software for company’s BIs, enabling them to get several reports in one window with predefined filters. Added new modules for report generation according to user filters.

Worked at information system for healthcare sector, providing analysis for molecular genetics, flow cytometry, cytogenetics. Added new medical dictionary supports according to major changes in USA medical law, added report generation based on integration with another hospital systems.

Working at end-to-end projects. Created a weather forecast widget, created an e-commerce sports shop.

Worked at ISV International Company, provides ERP system for construction industry, utilizing Progress 4GL technology. Created a billing system for landscape design companies.